Gas controller



FIG. 1 is a front/left-side/top perspective view of a gas controller showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Features shown in broken lines show environmental structure and form no part of the claimed design. 

We claim the ornamental design for gas controller, as shown. 